Patents by Inventor Alana Rah Desouza

Alana Rah Desouza has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Anti-bacterial aqueous ink compositions comprising self-dispersed sulfonated polyester-silver nanoparticle composites
    Patent number: 9617437
    Abstract: An aqueous ink composition including water; an optional co-solvent; an optional colorant; and a composite comprising a sulfonated polyester matrix having a plurality of silver nanoparticles dispersed within the matrix. A process including incorporating the aqueous ink into an ink jet printing apparatus; ejecting droplets of ink in an imagewise pattern onto an intermediate transfer member or directly onto a final image receiving substrate; optionally, heating the image to partially or completely remove solvents; and optionally, when an intermediate transfer member is used, transferring the ink in the imagewise pattern from the intermediate transfer member to a final recording substrate.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: April 11, 2017
    Assignee: Xerox Corporation
    Inventors: Valerie M. Farrugia, Alana Rah Desouza
  • Anti-Bacterial Aqueous Ink Compositions Comprising Self-Dispersed Sulfonated Polyester-Silver Nanoparticle Composites
    Publication number: 20160326390
    Abstract: An aqueous ink composition including water; an optional co-solvent; an optional colorant; and a composite comprising a sulfonated polyester matrix having a plurality of silver nanoparticles dispersed within the matrix. A process including incorporating the aqueous ink into an ink jet printing apparatus; ejecting droplets of ink in an imagewise pattern onto an intermediate transfer member or directly onto a final image receiving substrate; optionally, heating the image to partially or completely remove solvents; and optionally, when an intermediate transfer member is used, transferring the ink in the imagewise pattern from the intermediate transfer member to a final recording substrate.
    Type: Application
    Filed: May 7, 2015
    Publication date: November 10, 2016
    Inventors: Valerie M. Farrugia, Alana Rah Desouza